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33 Cards in this Set
- Front
- Back
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Eukaryotes have
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nucleus + membrane-bound organelles
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Bacteria are an example of
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Prokaryotes; no nucleus; no m-b o.
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Protists, Fungi, Plants, & Animals
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Eukaryotes. YOU are one.
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Examples of Specialized Plant Cells
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roots, stems, leaves
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Examples of Specialized Animal Cells
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blood, muscle, epithelium
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roots
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transport water into the plant
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stems
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support the plant
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leaves
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location of photosynthesis
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blood
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carries nutrients & gases in animals
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epithelial cells
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part of the skin
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Cancer (tumors grow)
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cell cycle repeats continually; unregulated cell division
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A new cow joins a herd & reproduces. This causes
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increased genetic VARIATION.
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Two species of plants do NOT interbreed. This PREVENTS
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gene flow between the species.
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Nitrogenous bases are also known as
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the Genetic Code
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Sequence of nitrogen bases in DNA codes for
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amino acids, which make proteins.
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To determine a complementary strand of DNA:
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A with T, T with A, C with G, G with C
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Kingdom Archaea
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Prokaryotic, unicellular, live in EXTREME environments
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Kingdom Eubacteria
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Prokaryotic, unicellular, can cause disease
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Kingdom Protista
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Eukaryotic, Uni- or Multicellular (ex euglena, amoeba, & paramecium)
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Kingdom Fungi
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Eukaryotic, Uni- or Multicellular, mostly nonmotile (sessile), ABSORBS nutrients
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Plant Kingdom
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Eukaryotic, Multicellular, nonmotile (sessile), PHOTOSYNTHETIC
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Animal Kingdom
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Eukaryotic, Multicellular, motile, heterotrophic (consumers)
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Helpful microorganisms
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keep nutrients cycling through the ecosystem; help people DIGEST their food
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Harmful microorganisms
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cause disease; antibiotics can kill bacteria.
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Adaptations of Organisms to their Environment
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flippers on swimmers, wings on birds, camouflage for blending
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Too much carbon in the atmosphere
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caused by destroying trees
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Nitrogen Cycle
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dead organisms must be broken down to release N to air; legumes (peas, clover, etc) house nitrogen-fixing bacteria in their roots.
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Cell differentiation is directly regulated
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when DNA activates specific genes.
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Cell differentiation changes STEM cells into
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GERM cells (which become gametes), somatic cells, and stem cells.
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If genes are influenced by environmental factors (ex: light)
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the organism's PHENOTYPE (appearance) may change.
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Two environmental factors that may regulate gene expression
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light and temperature
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Gene expression is
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regulated.
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Organisms, populations, & communities respond to external factors in order to
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survive. Seek life; avoid death!
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